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Light scattering simulation by concave, peanut-shaped silver nanoparticles modeled on Cassini-ovals

DOI: 10.1615/ICHMT.2007.ConfElectromagLigScat.160
pages 53-56

Jens Hellmers
Universität Bremen, Verfahrenstechnik, Badgasteiner Str. 3, 28359 Bremen, Germany

Norbert Riefler
Universität Bremen, Verfahrenstechnik, Badgasteiner Str. 3, 28359 Bremen, Germany

Thomas Wriedt
University of Bremen, Faculty of Production, Department Process and Chemical Engineering

Yuri Eremin
Moscow State University, Fac. of Apl. Math.& Comp. Sc, Lenin's Hills, 119992 Moscow, Russia

Abstrakt

Light scattering is a useful tool in particle characterization. The simulation of light scattering processes can help to understand scattering characteristics and from this information about particle sizes, materials or shapes can be retrieved. In this paper we demonstrate the application of the Nullfield Method with Discrete Sources for light scattering by concave, peanut-shaped silver nanoparticles. Additionally we use the Discrete Sources Method for result validation. For the shape model a Cassini-oval based model is used, which accords to two sintered silver spheres. This model is compared to a simpler two-sphere approach by calculating the corresponding scattering patterns.

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